System for cooling flue gases



-. 30. placement.

Patented July 3, 1923.

Nnarran.sfrfras;

wenn

HoWARn H. UTLErlor FLORENCE,,oononenqnssieivniro iirvimfs'mntirinea'R'E- FINING'COMPANY, or sTiVLoUIs, .MIssoUnL n ooRroRA'rIoN or MAINE@SYSTEM' ron oooLIeriluneiisnslj AvAppiieatnm ined January e, `1921-`seriai 110.435,413.

T0 @El 'whcm t Maly cfonc'e'rn.

Be it'lmown that I, HOWARD H. UTLEY, a citizen of thenited States, and aresident of the city of Florence, in the county of Fre-y 'mont'A andState of Colorado, have invented a new. and useful Improvement inSystems vfor 4CoolingFlue Gases,fof which thefollowing is aspecification. t V'This invention relates to means for reducing thetemperature of. the flue gases and eliminating the fume therefrom. `Oneof the principalobjects of `the present invention is to equip thecooling system with sepa-` rate and independent pipe or unit sectionswhose numbermay be increased or decreased according to the amount ofheat it is desired to 4remove from. the flue gases. vAnother objectisfto permit theremoval or ,changing of any one of the coolingunitswithout disturbing the othersv and without* interfering withI theoperation of the other units of the ls'ystem.. yAnother object is toprovide-each y unit'of 'the cooling system with a vseparate positivewater control or regulation. An-

other Objectis to facilitate easy cleaning of each cooling: unit and to.reduce the cost and tovsiniplify-the construction of the coolinglysystem byA making the units of standard stock parts capablev of easylrepair and re- Another object is to `prov-ide flexible connections-betweeneach individual unit and the water supply-and' thereby -allowfor` expansionandcontraction of the` units. Another object oftheiflexible connection is to permit the units to be lifted and droppedwhereby thefjarresulting from the droppingiofgthe unitswill shake offkmost of the. light` dustgwhich. deposits on the units.- .i y.

5 Y The invention consists vprincipally in "a separatev cooling unitsdisposedcrossi'vise of the furnace rfiueand having separate connectionswith the ysupply of coolingmedium whereby each individual cooling unit`.is ladapted to be lremoved and .replaced` without disturbngftheconnection between the-v reinainingcooling unitstmd thensupplyofwaterfor other cooling medium therefor; 'it

vmeansofa water cooling system, comprising `also consists inn'iakingthe; connections bee ltween said-units and` the water supply i flexible,whereby they are .permitted tov eX-y pand i `and i contract individuallyand. are

'tudinal ve'rticalsection of a reverl'ieratory rupting the 'ilow'ofwaterto or fromy the cooling `units-1 The-'invention `further consists-in'fthe combina-tions and "arrangements of partsliereinafter':describedand claimed. -In the accompanying drawing,-y 4vwhich 4f ormsfpartof'tliis specification, and `wherein ylike symbolsrefer to I like partswherever they occur, 1 f

Fig. l 'is a. diagrammatic viewin .long ifurnace, a cooling systemembodying my in vention lbeing;- shown f' in. connection theres Fig.l 2yis 4:an 'enlarged fragmentary s-ide elevation of the furnace in theregion of the cooling system, showing the separate flexible connectionsbetween la plurality of4 cooling units and a Water-header; andwf H .Fg.3 :is a -vertical section `taken crosswise of the coolingcondui't'.on'the lineiS-.B in Fig?,` f

The accompany-ing drawing :illustrates diagrammatically Aan ordinarytype of rever-.

beratory furnace 4 vwhich comprises a` lfurnacecliambeiihaving.a floororhearth 6 .onwhiclr the ore charge is-exposedto vthe ofV ore'an'dreducing-anClinatte-forming ma i teria-l and is inserted into` the.furnace chainchamber through atap h oley9 located close .to the hearthof the furnace.; ,The slag` is removed frointhe furnace .chamber throughf a ,tap hole l() locatedfabove` the matte tap-9. The .hotgasesfandmetallic fumeescape from ythe. furnace chamber througlranopening0r ,ll in thegrearwall thereof andi pass through ya long fluevorgcooling. passageway, l2 which .discharges into a plurality ofbagsfcontained Aiii an ordinary f bag holiSeMnOt lShow/rib).`

which bags'allow, the-escape ofthe products of combustion, but retainthesolids. j*

The temperature ofthe .fume laden gases in `the cooling passageway 121syreduced by ies."

.a plurality of coolingunits-l, which` extend lcrosswise of `the;pa.ssage'way-- The ui'iits are ,spacedfroliieach otherin both vertical andlhorizontal 'directions andtheirfnumber d eponds iupon the amountofheatdesired tofbeg removed. The uiiitseiitend through valined apertures 14in the opposite side walls of the cooling passageway with theirendsresting on` the bottoms of said apertures. Each unit comprises anouter cylindrical casing or pipe section 16. The inner'pipe sections 16extend centrally through the louter -pipe sections 15 and open into theinterior of said outer pipe sections near the rear end vthereof.v Thefront end of the outer pipe section 15 of each unit has a rigidconnection 17 with the upper end of ay verticallyy disposed outlet oroverflow pipe 18. The lower ends ofthe outlet pipes 18 lterminate at apoint `above a main overiiow trough (not shown) so as to empty into saidtrough. l 'The inlet pipes 16 of the units have flexible :connections19, preferably in the form of short sections of hose, with water headersorf drums 20, which communicate with a suitable souiceof water supply. Aseparate 'header is preferably'provided for every four Or five units. 1

Tith i the arrangement described, the water contrpl of each cooling unitisl independent, and each individual unit of they cooling system can`be'removed oi changed without disturbing the remaining units. Theflexible4 connections 19 between the inlet pipe sectionsv 16v and theheaders 20 permit the lexpansion and contraction of the units withoutinterrupting vor disturbing the flow of water to and from said iin-its.These fleX- ible connections also permit movement of the pipe sectionsbodily without interrupting the ,flow ofwatei1 therethrough whereby theends of the pipes may be raised and dropped for cleaning purposes, the'jar resulting from the dropping of the pipe sections tending to shakeoff most of the matter which is deposited thereoni The units may also becleaned in the usual' manner, as by means of a curved scraper. Theapertures in which the ends of vthe units'rest are of a greatervvertical dimension than the diameter of the units, thus leaving a spaceof suiiicient size [to permit entry of the curved scraper and ytopermit' the 'pipe' ysection to be raised and lowered.v Theisipacesbetween thev tops of ythe pipeand the tops of the apertures are closedby'meaiis of plates 21. These plates ,havetheir lower endsshaped to fitthe curved surface ofthe pipe section, and are provided with'eyes` orring portions 22 whereby the plates are adapted tol be removed bymeansfof a hooked rod,

The hereinbefore described construction permits of considerablemodification without departing from the invention; therefore, I do notwish .to beA limited to the details of construction shown anddescribed.V For instance, the rigid connection 17, between the f upperends of the vertical overow pipes 18 section 15, which is closedlat bothends, and an inner cylindrical casing or pipe and the inner pipe section16, may loe-made in the form of'liose connections', and the lower endsof said pipes rigidly connected toa main overiiowpipe.`l'lhis'arrangement wouldfperniitthe units to be ylifted without liftingthe overflow pipes. `Likewise, the invention is applicable not only toreverberatory and other metallurgical furnaces but also to boiler andother furnaces generally.

Likewise, it is obvious that some other cooling medium may be used inplace of water,`

liquid or=- even ygases plurality of separate cooling units, a-supply ofcooling medium and an overiiow for said units`v and means wherebysaidunits are permitted to expand and contract and are capable of beingmovedbodily without interruptH ing the flow of cooling medium to andfrom thesame, each unit consisting of a cylin-l diical shell lclosed at its ends"and a pipe connected vto said supply and extending through one end of,said shell `andterminating therein close vtothe other end thereof.

2. In a furnace comprising al heating chamber, and aflue leadingtherefrom, a

coolingsystem for said flue comprising a plurality ofseparateunits,separate `liquid supply and overflow pipes'for each ofsaid units, and means whereby said units are adapted for bodily movementwithin certain" limitsl without interrupting they flow of liquid to andvfrom the same.-eachiinit consisting of a cylindrical shelliclosed-at-its ends and a pipe y'connected to said supply and extending throughone end of said shell and terminating therein close fto the other' p'end thereof; v

In a chamber and a flue leading therefrvonn-a cooliirg syste-mvfor saidHue 'comprising a plural-ity of separate units y,disposed hori-`zontally crosswise ofv said flue with their ends resting in apertures`formed -in the opposite side walls thereof, a supply of cooling liquidfor'said units'and an outlettherefor, and means whereby said units areadapted toy be removed and inserted independently of each other and`without`disturbing the flow of liquid to and from the remaining units.l

4.111 a furnace comprising aheating chamber and a flue' leadingtherefrom, 'a5

water cooling system for said flue comprising a pluralityofseparateunits disposed crosswise in said flue with their ends resting in`apertures formed in the opposite walls thereof` said lunits beingspaced apart in both horizontal and vertical directions, water headersfor said unit's'a-nd overflow pipes therefor, and ay separate flexibleconfurnace comprising a heating nection between each of said units andsaid water headers, whereby the disconnecting of the flexible connectionbetween a unit and the water header therefor permits said unit tobe'removed and replaced without interfering with the operation of thefurnace or the operation of the remaining unit of said. cooling system.

5. In a metallurgical furnace compris'ng a heating chamber andA a flueleading therefrom, a water cooling system for said flue comprising aplurality of separate casings disposed crosswise of. said flue andsupported at their opposite ends in alined apertures formed in theopposite side walls thereof, a. water supply and a water overflow foreach of said casings, the aperturesy in which the ends of said casingsare supported being larger than the diameter of said casings.

posed separate cylindrical casings arranged crosswise of said flue withtheir ends resting in apertures formed in the opposite walls thereof, awater supplyV and a water overlow for said casings said apertures beingof a greater height than vthe diameter' of said casiiigs, whereby anopening is left between the tops of said apertures and said casings,separate exible connections between each of said casings and the'saidwater rsupply and overflow, wherebyr light ore dust is adapted to beremoved from said 1,460,872 y. c' 5 i c f 'e casing by the action ofraising and dropping an end ofa casingwithout interrupt- `ing the flowof water-to and from the same,

and'removable cover plates for covering the openings betweenthe topsiofsaid casings and the tops of the aperture therefor. 7. In ametallurgical `furnace comprising a heating chamber and a `[lne leadingther-elrom, a water cooling system for said'flue` comprising a pluralityof separateunitsdis-` y posed therein, each of said units comprising anyouter casing'and an inner casing extending through one end of saidoutercasing and communicatinglwith the interior thereof, a watersupplyand a watervoutlet for said units, and` a separate; flexibleIconnection ybetween thefouter lcasing of each unit and the water outletand between the innerY casing and the` water outlet, whereby said unitsare permitted to expand and con-l tract and are capable of being movedvbodily without interrupting communication between said units andthewater supply andwater outlet. i y

8. In a metallurgical furnacecomp'rising a heating chamber and a flueleading there- `fi-oiina water cooling system for said lflue comprisingaplurality ofseparate units dis-k posed crosswise in said flue withtheir v:ends

supported in apertures in the walls thereof, each of said unitscomprising spacedinner and outer casings communicating with each otherat `one end of the unit, a. water supply and a water outlet for saidunits and a separate flexible connection `between the outer casing ofveach unit and said water soy supply, whereby said units arepermittedtov.. expand and contract and are capable of be-E ing movedbodily in said apertures without interrupting the flow ofwater to andfrom the same. c

day of December, 1920.`

. i-iowii'nip i-i. UTLEY. 4

l A 8,5` Signed at St. Louis, Missouri, this 31ste v

